static X509 *find_issuer(X509_STORE_CTX *ctx, STACK_OF(X509) *sk, X509 *x);
static int check_chain_extensions(X509_STORE_CTX *ctx);
static int check_name_constraints(X509_STORE_CTX *ctx);
+static int check_id(X509_STORE_CTX *ctx);
static int check_trust(X509_STORE_CTX *ctx);
static int check_revocation(X509_STORE_CTX *ctx);
static int check_cert(X509_STORE_CTX *ctx);
}
#endif
+/* Given a certificate try and find an exact match in the store */
+
+static X509 *lookup_cert_match(X509_STORE_CTX *ctx, X509 *x)
+ {
+ STACK_OF(X509) *certs;
+ X509 *xtmp;
+ int i;
+ /* Lookup all certs with matching subject name */
+ certs = ctx->lookup_certs(ctx, X509_get_subject_name(x));
+ if (certs == NULL)
+ return NULL;
+ /* Look for exact match */
+ for (i = 0; i < sk_X509_num(certs); i++)
+ {
+ xtmp = sk_X509_value(certs, i);
+ if (!X509_cmp(xtmp, x))
+ break;
+ }
+ if (i < sk_X509_num(certs))
+ CRYPTO_add(&xtmp->references,1,CRYPTO_LOCK_X509);
+ else
+ xtmp = NULL;
+ sk_X509_pop_free(certs, X509_free);
+ return xtmp;
+ }
+
int X509_verify_cert(X509_STORE_CTX *ctx)
{
X509 *x,*xtmp,*chain_ss=NULL;
/* we now have our chain, lets check it... */
- /* Is last certificate looked up self signed? */
- if (!ctx->check_issued(ctx,x,x))
+ i = check_trust(ctx);
+
+ /* If explicitly rejected error */
+ if (i == X509_TRUST_REJECTED)
+ goto end;
+ /* If not explicitly trusted then indicate error */
+ if (i != X509_TRUST_TRUSTED)
{
if ((chain_ss == NULL) || !ctx->check_issued(ctx, x, chain_ss))
{
if (!ok) goto end;
- /* The chain extensions are OK: check trust */
-
- if (param->trust > 0) ok = check_trust(ctx);
+ ok = check_id(ctx);
if (!ok) goto end;
return 1;
}
+static int check_id_error(X509_STORE_CTX *ctx, int errcode)
+ {
+ ctx->error = errcode;
+ ctx->current_cert = ctx->cert;
+ ctx->error_depth = 0;
+ return ctx->verify_cb(0, ctx);
+ }
+
+static int check_id(X509_STORE_CTX *ctx)
+ {
+ X509_VERIFY_PARAM *vpm = ctx->param;
+ X509 *x = ctx->cert;
+ if (vpm->host && !X509_check_host(x, vpm->host, vpm->hostlen, 0))
+ {
+ if (!check_id_error(ctx, X509_V_ERR_HOSTNAME_MISMATCH))
+ return 0;
+ }
+ if (vpm->email && !X509_check_email(x, vpm->email, vpm->emaillen, 0))
+ {
+ if (!check_id_error(ctx, X509_V_ERR_EMAIL_MISMATCH))
+ return 0;
+ }
+ if (vpm->ip && !X509_check_ip(x, vpm->ip, vpm->iplen, 0))
+ {
+ if (!check_id_error(ctx, X509_V_ERR_IP_ADDRESS_MISMATCH))
+ return 0;
+ }
+ return 1;
+ }
+
static int check_trust(X509_STORE_CTX *ctx)
{
-#ifdef OPENSSL_NO_CHAIN_VERIFY
- return 1;
-#else
int i, ok;
- X509 *x;
+ X509 *x = NULL;
int (*cb)(int xok,X509_STORE_CTX *xctx);
cb=ctx->verify_cb;
-/* For now just check the last certificate in the chain */
- i = sk_X509_num(ctx->chain) - 1;
- x = sk_X509_value(ctx->chain, i);
- ok = X509_check_trust(x, ctx->param->trust, 0);
- if (ok == X509_TRUST_TRUSTED)
- return 1;
- ctx->error_depth = i;
- ctx->current_cert = x;
- if (ok == X509_TRUST_REJECTED)
- ctx->error = X509_V_ERR_CERT_REJECTED;
- else
- ctx->error = X509_V_ERR_CERT_UNTRUSTED;
- ok = cb(0, ctx);
- return ok;
-#endif
+ /* Check all trusted certificates in chain */
+ for (i = ctx->last_untrusted; i < sk_X509_num(ctx->chain); i++)
+ {
+ x = sk_X509_value(ctx->chain, i);
+ ok = X509_check_trust(x, ctx->param->trust, 0);
+ /* If explicitly trusted return trusted */
+ if (ok == X509_TRUST_TRUSTED)
+ return X509_TRUST_TRUSTED;
+ /* If explicitly rejected notify callback and reject if
+ * not overridden.
+ */
+ if (ok == X509_TRUST_REJECTED)
+ {
+ ctx->error_depth = i;
+ ctx->current_cert = x;
+ ctx->error = X509_V_ERR_CERT_REJECTED;
+ ok = cb(0, ctx);
+ if (!ok)
+ return X509_TRUST_REJECTED;
+ }
+ }
+ /* If we accept partial chains and have at least one trusted
+ * certificate return success.
+ */
+ if (ctx->param->flags & X509_V_FLAG_PARTIAL_CHAIN)
+ {
+ if (ctx->last_untrusted < sk_X509_num(ctx->chain))
+ return X509_TRUST_TRUSTED;
+ if (sk_X509_num(ctx->chain) == 1)
+ {
+ X509 *mx;
+ x = sk_X509_value(ctx->chain, 0);
+ mx = lookup_cert_match(ctx, x);
+ if (mx)
+ {
+ (void)sk_X509_set(ctx->chain, 0, mx);
+ X509_free(x);
+ ctx->last_untrusted = 0;
+ return X509_TRUST_TRUSTED;
+ }
+ }
+ }
+
+ /* If no trusted certs in chain at all return untrusted and
+ * allow standard (no issuer cert) etc errors to be indicated.
+ */
+ return X509_TRUST_UNTRUSTED;
}
static int check_revocation(X509_STORE_CTX *ctx)
{
ASN1_OCTET_STRING *exta, *extb;
int i;
- i = X509_CRL_get_ext_by_NID(a, nid, 0);
+ i = X509_CRL_get_ext_by_NID(a, nid, -1);
if (i >= 0)
{
/* Can't have multiple occurrences */
else
exta = NULL;
- i = X509_CRL_get_ext_by_NID(b, nid, 0);
+ i = X509_CRL_get_ext_by_NID(b, nid, -1);
if (i >= 0)
{
xs=xi;
else
{
+ if (ctx->param->flags & X509_V_FLAG_PARTIAL_CHAIN && n == 0)
+ return check_cert_time(ctx, xi);
if (n <= 0)
{
ctx->error=X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE;
projects / openssl.git / blobdiff